Hello, hopefully someone out there has done this before. What I'm trying to do is setup a mail server for a website. The site will allow members to log in and to send out emails. The major feature I need is for any error that postfix encounters to be sent to the account holder. The account holder user will not have an email address on this system. For example:

- account holder of my system
- someone person1 wants to email
- the email used in the "mail from:" field since spoofing is not kosher anymore